page_title: Ice
section_title: Dry ice
hierarchical_section_title: Ice / Dry ice
caption_attribution_description: Fun with dry ice. We received a package today that was packed with some dry ice. Oh, instant fun.
context_page_description: Ice is the common name for frozen water. Other liquids, such as ammonia or methane or milk could be called ice when they freeze but they are called 'milk ice', for instance, instead of just 'ice'. Liquid water becomes solid ice when it is very cold. The freezing point is 0° Celsius.
  Ice is commonly made in a home refrigerator or freezer. If water is put in a freezer and left for a while, the water gets very cold and will freeze solid, creating ice. Water can be placed into a copper container to cause it freeze into ice faster. Metals are good conductors of heat, so water can freeze faster than in a plastic ice tray.
context_section_description: There is also 'dry ice'; it is frozen carbon dioxide. Dry ice exposed to normal air gives off carbon dioxide gas that is odorless and colorless. The gas is so cold that when it mixes with air it cools the water vapour in the air to fog, which looks like a thick white smoke. It is often used in the theatre to make fake fog or smoke.
caption: Dry ice when put in water
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